New forged engine
-if you want to build a dyno queen build a forced induction 6 speed
-if you want to win drag races go with a 427 and small shot of spray along with an A4
There's some humour in what I am saying, but there is also some truth

There's no doubt about it that A4 cars are MUCH easier on parts along with being much easier to put down power at the track with...
If you never plan on drag racing then you can stick with an M6, but what's the point of building a 600+RWHP car if you don't plan on drag racing






